KTp is missing appdata files altogether

[Aleix Pol]

Hi,
I wanted to test some things on Discover+KTp, then I realized that
we're missing appdata altogether.

Since we have several packages that interrelate really tightly but not
really a central one, I'd suggest having the application appdata file
in ktp-contact-list and consider the rest addons for it (although
common internals doesn't do much by itself).

In the end all parts depend on each other so it's a bit weird to even
have the option though. What do you guys think?

Cheers,
Aleix